To practice addition and subtraction in column. Write the numbers by hand! Up to 1200 pages full of exercises. Handwrite the numbers, one by one, as if it were a real sheet of paper. Even better: you can use the entire screen to write each number! Math Loops will identify and verify your numbers as you write them by hand. It will highlight your mistakes while you solve the exercise. It will show and correct up to two errors in each addition or subtraction. One more mistake ... and you have to start over;) Three levels of increasing difficulty and more than 80 pages with exercises (upgradeable to the full version with more than 1200 pages) With / without carry. It allows different methods of carrying / borrowing. Each resolved page uncovers a tab of the impressive image of an animal. Enjoy and learn!